Eyelet stay taping machine



April 11, 1939 w. P. osGooD EYELET VSTAY TAPING MACHINE e sheets-snaai 1 Filed March l, 1937 April 11, 1939. w. P. osGooD I 2,154,007

EYELET STAY TAPING MACHINE Filed March l, 1957 6 Sheets-Sheet 2 April l1, 1939. w. P. osGooD EYELET STAY TAPING MACHINE Filed March l, 1937 6 Sheets-Sheet 3 April 11, 1939. w. P. osGooD EYEIJET STAY TAPING MACHINE Filed March l, 1957 6 Sheets-Sheet 4 v pril ll, 1939. I W P QSGOOD 2,154,007

EYELET STY TAPING MACHINE Filed March l, 1937 6 Sheets-Sheet 5 April 11, 1939.

w. P. o'sGQD EYEIJETv STAY TAPING MACHINE Filed March 1, 1937 e sheets-sheet e Patented Apr. 11, 1939 UNT STATES ATENT OFFICE 35 Claims.

In its broadest aspect the present invention relates to machines which are used in the manufacture of shoes to apply a reinforcing strip to a shoe upper part comprising either a sheet of pliable material or the quarters joined by a back seam. More specifically, the present invention relates to machines which are used to apply tape to that portion of the iiesh face of a shoe upper part which is to be provided with a'row of holes each forming or receiving one element of a closure. In some shoes the holes receive buttons, in others hooks, and in others eyelets. In the shoe industry the area in which the row of holes is to be formed and which is to` be taped prior to the hole forming operation, is called the button row, the hook row or the eyelet row, depending upon the type of closure with which the shoe is to be provided. For convenience the phrase eyelet row is used herein to designate the taped area irrespective of the ultimate use of the row of holes to be formed therein.

Usually the eyelet row is covered by a piece of tape placed alongside but without the plies of the folded margin of the shoe upper part. The folded margin has a bent run extending along at least one end of the eyelet row. Usually both ends of the eyelet row are bent in opposite directions. It has been proposed heretofore to provide tape-applying machines with means for shaping the ends of the tape to cause them to nt the bent runs at the ends of the eyelet row, but in order to do this it was considered necessary to provide the taping machines with two cutting devices operating successively which rendered the machines complicated and costly to manufacture and operate.

One of the principal objects of the present invention is to provide a tape-applying machine with a single cutting device which will shape at least one edge of the reinforcing stay so that it will fit the bent run on at least one end of the eyelet row.

Another object of the present invention is to produce a taping machine in which the tapesevering knife is thrown automatically out of operation.

Another object of the present invention is to produce a taping machine in which the tapeap-plying mechanism withdraws the tape as; needed from a source of slack tape supply which is replenished by a pull-off device operating automatically, prior to the slack tape withdrawing action of the tape-applying mechanism, to pull tape from the main source of supply and thus free the pulled off tape from the main source of supply tension.

To the accomplishment of these objects, and such others as may appear hereinafter, the various features of the present invention reside in certain devices, combinations and arran-gements of parts hereinafter `described and then pointed out broadly and in detail in the appended claims, possessing advantages readily apparent to those skilled in the art.

The various features of the present invention will be readily understood from an inspection of the accompanying drawings illustrating the best form of the invention at present known to the inventor, in which,

Figure 1 is a view in front elevation of the tape-applying machine, the tape-severing knife and the tape-guides or presenters being shown in the position they occupy during the normal tape-applying operation;

Fig. 2 is a view in left side elevation;

Fig. 3 is a detail view, similar to Fig. 1, the plate carrying the mechanism for predetermining variably the stroke of the tape pull-off having been removed to expose the interior parts;

Fig. 4: is a detail view in front elevation of the Work guide showing its position relative to the cutting block when the work-supporting roll, (shown in construction lines), is lowered to permit the insertion of the work into the machine;

Fig. 5 is a detail view in underside plan of the taped eyelet row;

Fig. 6 is a detail view, similar to Fig. 3, the tape-severing knife and the tape guides or presenters being shown in the position they occupy during the tape-severing operation;

Fig. 'l is a detail view in front elevation of the tape pull-olf cam actuating ratchet and the devices which transfer the point of engagement of the pawl from the ratchet flat to the rst operative tooth adjacent thereto;

Fig. 8 is a detail sectional elevation, the tapeapplying hammer, the tape-severing knife and the tape guides or presenters having the same positions as that of Fig. 6; 45

Fig. 9 is. a ldetail sectional plan on line 9 9, Fig. 8;

Fig. 10 is a detail end edge view of the tapesevering knife, viewing Fig. 9;

Fig. 11 is a detail right-side sectional elevation on line il-il, Fig, 1;

Fig. 12 is a detail View in right sectional elevation of the work-supporting roll, the work guide, and the vertically movable tape presenter, and

Fig. 13 is a detail View in sectional plan on the line |3-|3, Fig. 8.

Generally, the illustrated embodiment of the present invention is provided with a tape-applying mechanism, a work supporting roll, a device for pulling off tape from the main tape source of supply and for forming a slack tape source of supply from which the tape-applying mechanism withdraws tape free from the main source of supply tension as needed, a tape-severing knife which in ordinary tape-applying operations may merely sever the tape to produce a predetermined length but which in eyelet row taping operations severs the tape to produce a predetermined length and shapes the leading and trailing edges of the tape to t the bent runs at one or both ends of the eyelet rows, which tapesevering knife in all taping operations is thrown automatically both in and out of operation, and two tape-engaging devices which in the normal tape-applying operation act as tape guides in cooperation with the tape-severing knife -cutting block and which, after the tape is severed, are operated in two directions normal to each other to permit one of them to act as a tape-presenter to feed the leading edge of the tape from the point of cut-off into the Zone of activity of the tape-applying mechanism.

Referring now to Fig. 5 the pliable material to which the reinforcing strip is to be applied is shown as a shoe upper part I4 provided with a folded margin l5. That portion of the ilesh face of the shoe upper part i4, which is the face exposedto view in Fig. 5 and through which a row of holes is to be formed ,to receive buttons, hooks or eyelets, is called herein the eyelet row. As shown in Fig. 5, the eyelet row is covered by a piece of tape I6 placed alongside but without the plies of the folded margin. The folded margin |5 has a straight run |1 along one side of the eyelet row, a bent run I8 along one end of the eyelet row, and a bent run |9 along the other end of the eyelet row. The tape I6 is applied to the eyelet row with one longitudinal edge 20, engaged with the straight run l1, and with shaped ends 2| and 22, engaged, respectively, with the bent runs i3 and I9.

The applying of the tape I6 to the eyelet row is accomplished by the combined action of the roll work support 23 (Figs. l, 2 and 3) and a pressing member or hammer 24. The pressing member 24 is detachably connected to the bottom of a head member 25, or lever, which has a vertical movement and also a rocking movement laterally. The oscillating head 25 is mounted on the main frame 26 of the machine and it receives its oscillating movement from an eccentric 21, (Fig. 8) on a driving shaft 28 carried by the main frame. The head 25 is provided with a slot 29, (Figs. 1, 3 and 8), through which extends a stud 30 fast on the main frame 26, said stud having a block 3|, (Figs. 1 and 8) which is mounted in the slot 29 and is journaled on the stud 30.

As the shaft 28 is rotated the eccentric 21 thereon gives the head 25 an up and down movement and also a rocking movement laterally, said movements causing the face of the pressing member 24 to move toward and from the work on the work support and also to having a lateral rocking contact with the work.

In the machine disclosed in the patent to Osgood, No. 1,549,376, the head, corresponding to the head 25, slides on the block in a direction radial to the eccentric pin or strap during the rotation of the eccentric, that is, in a straight line which intersects both the axis of the shaft and the center of the stud. With this construction the right-hand corner of the hammer, viewing the left side of the machine, passes through an orbital path which differs from the path passed through by a regular four motion device, having equal up and down and equal lateral steps, in that the square corners thereof are rounded. With such a mode of operation, the right-hand corner of the hammer, in passing from the vertical to the horizontal traverses a curve in the path and thus imparts a glancing blow to the work at the moment of initial impact.

In the illustrated embodiment of the present invention, the head 25 slides on the block 3| in a direction non-radial to the eccentric during its rotation, that is, in a straight line which extends downwardly and laterally towards the toe of the hammer across the straight line intersecting the axis of the shaft 21 and the center of the stud 30. With this construction and mode of operation the hammer has a compound movement during its descent into contact with the Work. That is, the hammer in moving downwardly also moves laterally towards the unsecured portion of the tape extending between the work and the tape guide |45. Stated in another way, in the former construction, the hammer impacted the work initially while moving towards the downgoing side of the work-supporting roll. In the present construction, the hammer impacts the work initially while moving towards the upgoing side of the work supporting roll.

The work-supporting roll 23, which is covered by a rubber jacket 32, is freely rotatable upon one end of a carrier, 33, (Fig. 2) the other end of which is provided with lateral bosses 34 and 35, (Fig. 1), each of which is provided with a conical cavity 36 which receives the conical end of a screw 31 secured to the walls of a hollow frusto-conical domed shell 38, (Fig. 2), connected to the frame 25 through a vertical web 380. With this construction the carrier 33 may rock upon the conical ends of the screws 31.

The front end of the carrier 28 is provided also with conical cavities, (Fig. l), which receive the conical ends of screws 39 carried by a yoke 40 constituting, in effect, one link of a toggle, (Fig. 2). The other link 4| of the toggle comprises a yoke which is rotatably mounted on a horizontal rod 42 carried by the base of the shell 38. The floating pivot for the toggle links 40 and 4| is formed by a pair of conical ended screws 43 carried by the link 4| and arranged to engage conical cavities formed in the lateral sides of the yoke 40.

In order to force the work-supporting roll 23 upwardly towards the tape-pressing member Y24 yieldingly, the back face of the yoke 40 is provided with a pair of spaced arms 44, (Fig. 1), which support a horizontal rod 45 upon which a block 46, (Fig. 2) is pivotally mounted. The block 46 receives one end of a screw threaded rod 41 the other end of which is provided with a nut 48 threaded into the shell 38 and provided with a spring tension adjusting hand wheel 49. Coiled around the rod 41 and interposed between collars 50 and 5| thereon is a spring 52.

In order to break the toggle and thus lower the work-supporting roll 23 to facilitate the insertion and removal of the work into and out of the machine, respectively, the link 4| is provided with an arm 53, (Fig. 2), which is pivotally connected to the upper end of a treadle rod 54. The

dome ,of the shell 38 is provided with an adjustable bolt 55, (Fig. 2), the lower end of which is arranged to engage a vertical extension 56 on the carrier 83 and thus act as a stop to limit the upward movement of the work-supporting roll under the influence of the spring 52.

This manner of supporting the carrier for the roll on the conical ends of adjustable screws is advantageous as it provides for greater manufacturing tolerance, in that the roll may be brought into correct operating position readily after assembly, for ease in take-up in the case of wear, and for the formation of the toggle through which a heavy pressure is transmitted from the spring to the roll.

The work is guided into the machine by the curved surface 51 (Figs. 1, 2, 4 and 11) on a thin shield 58, forming a guard for the righthand side of the work-supporting roll, viewing Figs. 1, 2 and 4. The shield 58 is formed on a block 59 (Fig. ll), which is secured to the carrier 33.

The work is guided during the operation of the machine by a guide 68 on the block 59. The guide 68 is provided with an edge 6I arranged to engage the external edge of the shoe part |4 (Fig. 5) which is parallel to the straight run I1. The edge 6| is formed between two laterally projecting upper and lower anges 62 and 63, respectively, the upper one being short and straight (Fig. 4), and the lower one being long and curved to extend over and conform to the upgoing side of the work-supporting roll close to the initial point of operation of the tape-applying presser member 24. As shown in Fig. 4, this construction produces a passageway, for the edge of the work, which converges in the direction of the line of feed. The guide 68 is prowided, ,adjacent the left-hand end. of the flange 62 (Fig. 4), with an extension 64 which extends vertically in back of the pressing member 24 and prevents work having abrupt curvatures from being improperly located in the guide.

As usual in this type of machine the tape is coiled in a roll (Figs. 1 and 2), constituting the source of supply. From the source of supply the tape passes under a roll 65 (Fig. 3), which is journaled in one ear formed on a cover plate 66 secured to frame 26. The tape is pressed against the top of the cover plate 66 by the head of a pawl like device 61 pivoted from another ear on the cover plate and urged to engage the tape under the mild tension of a coiled spring 68 interposed between the tail of the device 61 and the top of the cover plate. The tail of the device 61 is provided with a slot 69 through which the tape passes on its way from the source of supply to the roll 65.

From the tension device 61 the tape passes around a roll 1i) carried by the free end of a pull-off lever 1|` (Figs. 3 and 6). The other end of the pull-off lever 1| is secured to a rock shaft 12 which is journaled in a hub 13 (Fig. 2), formed on a plate 14 theThead of which is secured to the web 3851. The rear end of the rock shaft 12 is provided with a collar 15 to which one end of a spring 16, coiled about the hub 13 and interposed between the plate 14 and the collar 1,5, is secured. The other end of spring 16 is hooked into the plate 14 and tends to hold the roll i9 under an extremely light tension in con tact with the tape.

From the roll 18 the tape passes under a roll 'l1 mounted on one end of the front face of a U shaped lever 18 (Fig. 11), secured centrally to a rook shaft 13 journaled in a hub 80 on the plate 14. Coiled about the hub and interposed between the plate 14 and a collar 8| on the shaft 19 is a coiled spring 82 having one end secured to the plate and the other end secured to the collar. The spring 82 tends to rotate the rock shaft 19 clockwise, viewing Figs. 3 and 6, and thus hold the lever 18 engaged with a pin 83 (Fig. 6), projecting forwardly from a bracket 84 secured to the front face of the plate 14. Movement of the rock shaft 19 in the other direction is limited by an adjusting screw 85 carried by the lever 18, the lower end of which is arranged to engage one of the ats on an extended hexagonal nut 850, threaded on a rod 85| projecting forwardly from the plate 14.

From the roll 11 the tape passes over a roll 86 carried by the front face of the other end of the lever 18. From the roll 86 the tape passes about a roll 81 carried by the plate 14. From the roll 81 the tape passes over an inclined surface 88 formed in the upper end of a cutting block 89 secured to the plate 14 with its cutting bed surface directed to the right, viewing Figs. 3 and 6.

The tape passes over the cutting bed surface of the cutting bed 89, then over an inclined surface 90 formed in the lower end thereof, to the point of operation beneath the tape-applying member. The opposite sides of the cutting block adjacent the inclined surfaces 88 and 98 form ways which hold the tape from lateral movement during its passage over the block.

The adhesive face of the tape engages the peripheral surfaces of the rolls 65, 86 and 81 (Fig. 3). These rolls are provided with peripheral grooves so that the adhesive face of the tape engages only the lands between the grooves. The other rolls engaged by the tape are of the usual anged type.

From the construction described it is apparent that during the feed of the taped work over the work-supporting roll 23 by the pressing member 24 there is a tendency for the pressing member to pull tape from the source of supply at each feeding step. But as the tacky face of the tape in the source of supply is stuck somewhat to the non-tacky face in an adjacent convolution, considerable force is required to unwind the tape. It is, therefore, undesirable to rely upon the pressing member 24 to pull the tape from the source of supply as the pulling force exerted thereby would drum-head the tape between the work and the lower corner of the cutting bed 89 and thus interfere with the proper application of the tape to the work.

In the illustrated embodiment of the present invention, the lever 1| is actuated in a manner presently to be described to free a predetermined amount of tape from its source of supply tension and to hold this freed tape in a loop constituting a source of supply of slack tape which is used up as needed during the tape-applying operation. In the illustrated embodiment of the present invention, the entire amount of tape required by the pressing member to tape the work is freed from the source of supply tension during a single stroke of the lever 1| which amount, however, may be Varied in accordance with the requirements for different lengths of the eyelet `rows or the lengths of the tape needed to tape the particular piece of work operated upon.

To this end the lever 1| is provided with a follower roll 9| (Figs. 2, 3 and 6), which is normally held by the pull-exerted by the hammer 24 on the loop of tape held by the lever in the path of movement of a peripheral cam 92 secured to a shaft 93 journaled in a hub on the plate 14. The shaft 93 is provided With a ratchet 94 which is driven by the head of a pawl 95 arranged to engage the teeth on the periphery of the ratchet, one tooth at a time, and thus rotate the cam shaft S3 in a step by step manner. The pawl 95 is pivoted on a jointed lever 96, one end of which is pivoted on a pin 91 carried by the oscillating head 25 and the other end of which is ,pivoted on the rock shaft 12. With this construction the lever 96 is oscillated during each cycle of operations of the tape-applying hammer 24 to cause the pawl 95 to rotate the cam shaft 93. The periphery of the ratchet 94 is provided with a smooth portion 98 (Fig. '7), adjacent the rst tooth 99 thereon. The head of the pawl is depressed towards the periphery of the paWl in the usual manner by a leaf spring |00, carried by the lever 9B, having its free end engaged in a notch |9| formed in the tail of the pawl 95.

In order to hold the cam shaft 93 stationary while the pawl 95 rides back to engage the next tooth in the ratchet 94 the cam` shaft 93 is provided with a second ratchet |02, (Fig. 2), outside the cam shaft hub, the. teeth of which ratchet are engaged successively by a pivoted spring pressed pawl 03 carried from the plate 14. The teeth in the ratchet 02 extend completely about its periphery in order to hold the cam shaft 93 stationary during the time the pawl 95 vibrates on the smooth portion 98 of the ratchet 94.

In order to prevent the cam 92 and the ratchet 94 from getting out of timed relation the cam 92 carries a pin |030 which passes through the ratchet 911 and is suitably secured in position as by a bolt, (not shown).

For convenience in disclosure, Fig. 6 may be considered as showing the position of the parts at the commencement of the pull-off cycle in which the maximum amount of tape is pulled from the source of supply. rlhe lever l is illustrated in full lines as having reached its limit of movement on the stroke on which it delivers tape free of the source of supply tension for the operation of the tape-applying hammer 24. In this position of the lever 'H the follower roll 9| thereon engages the idle portion on the hub of the cam 92 and the pawl 95 is engaged with the rst tooth 99 on the ratchet.

Oscillation of the lever 96 causes the pawl 95 to rotate the rachet 94 in the direction of the arrow, Fig. 3, by engagement of the teeth thereon successively until the pavvl reaches the smooth portion 98 on the ratchet on which portion the pawl vibratcs idly. Owing to the rapid vibration of the lever 9S this rotation of the ratchet occurs in about a second.

During this rotation of the cam shaft 93 the cam 92 moves the pulleoff lever l! from` the full line position of Fig. 6 to the construction line position thereof thus causing the pull-off to pull the maximum amount of tape from the source of supply. When during the rotation of the cam 92 its high portion passes by the follower 9i the pull-off lever 'H is freed to the influence of both the spring TS and the hammer 2li. The spring 'I6 holds the slack tape pulled off the source of supply in a loop. The hammer 24 in applying tape to the Work eats into this loop of tape thereby overcoming the influence of the spring "Iii and causing the pull-olf lever 1| to move from the construction line. position of Fig. 6 back to the full line position thus completing the pullolf cycle.

With this construction the pull-off, in a single stroke in one direction, pulls off from the source of supply all the tape required by the hammer 24 to tape the particular piece of work next to be operated upon. The pull-off stroke occurs between the tape-applying operations upon successive work pieces.

The illustrated embodiment of the present nvention is designed to operate upon eyelet rows or other pieces of sheet material which vary widely in size, some requiring the application of a short length of tape, and others the application of long lengths and still others the application of a length longer than the short piece and shorter than the long piece.

In order that the pull-off and tape-delivery strokes of the pull-off lever 7| may be varied in accordance With the particular length of tape required by the hammer 24 to tape the work operated upon, the machine is provided with an indicating plate it. provided with openings which, respectively, receive the end of the rod 85` and a similar rod |07 on the plate 14, (Fig. 3), nuts |08 (Fig. l), being used to secure the indicating plate |04 in position. The plate |04 is provided with an arm H29, (Fig. 2), the hub of which is secured to a stub shaft H0 journaled in the plate. The stub shaft H0, on the other side of the plate, is provided with a cam H2 arranged to engage a pin H3 projecting forwardly from the pull-off lever 'EL The free end of the arm |09 loosely carries a pin H4, (Fig. 2), having a knurled operating head H5 and an end adapted to be inserted into any one of a plurality of holes HG, (Fig. l), in a quadrant H1 formed on the surface of the plate |04. The pin is held in any selected one of the holes by a leaf spring I IB, (Figs. l and 2), one end of which is secured to the arm |09 and the other end of which engages a collar H9 on the pin H4, this end of the. spring being yoked to embrace the pin loosely.

When the pin is located as shown in Fig. l, the cam H2 has moved the lever 'H to the right so that the follower roll 9| is picked up by the cam 92 late in the rotation of the cam shaft 93. In the position indicated in Fig. l the shortest possible length of tape is pulled from the source of supply by the pull-off lever and delivered, free of the source of supply tension, for the operation of the tape-applying hammer 24.

Shifting the pin H4 to the left, (Fig. 1), into one of the other holes H6 causes the cam 92 to pick up the roll 9| earlier in the rotation of the cam shaft 93 thus to impart a longer pull-off stroke to the lever 7|, the lowerrnost hole HS indicating the position of the cam H2 to locate the pull-off lever 'l initially to receive its longest pull-off stroke.

It is usual in this type of tape-applying ma- Chine to provide a tape-severing knife to sever the tape. ln the illustrated embodiment of the invention the tape-severing knife H9, (Figs. 9, and 10), is Y shaped in order that it may cooperate with the bed 89 and in a single cutting stroke shape the trailing edge on the piece of tape being applied to the eyelet row, (Fig. 5), to fit the bent run 22, and at the same time shape the leading edge on the next piece of tape to be applied to the next succeeding eyelet row to t the bent run 2| thereon.

As indicated in Fig. 10 the cutting edge A of the tape-severing knife is shaped as in a chisel except that instead of the bevels meeting, they merge with a narrow flat forming the leading edge of the knife.

The tape-severing knife is formed upon a block which is secured to one end of a slide |2| mounted to slide l;eneath cover plates |22, (Fig. ll), in a slideway |23 formed in a bracket |26 bolted to the plate 73. It will be apparent from an inspection of Figs. 5, 9 and 10 that the Y shaped knife produces a V shaped piece of waste constituting the material lying between the branches of the Y during the tape-severing operation. The successive pieces of waste material stick to each other but the plies so formed work backwardly in the space between the branches of the Y into a groove |26 formed in the'rear face of the slide |2| from which they drop harmlessly. Interposed between the cover plates |22 and secured to the slide |2| is a rack |25 which is engaged by teeth on a segment |26 having a hub |27, (Fig. l1), secured to a horizontal shaft |28 journaled in a hub |29 on the plate 74.

As pointed out hereinbefore Fig. 6 may be considered as showing the position of the parts at the commencement of the pull-off cycle. As shown in Fig. 6 the tape-severing knife H9 is positioned to sever the tape engaged with the cutting bed 39. During the pull-off cycle the tape-severing knife ||9 is retracted from the cutting bed 89, power for operating the knife is stored in a spring, the knife is latched in its retracted position to hold it from movement against the power of the spring, and finally the latch is tripped to free the knife to the influence of the spring which operates to drive the knife against the tape on the cutting block to shape the trailing end of the tape being applied .and the leading end of the tape next to be applied.

To this end an arm |36, (Figs. 3 and 6), is secured adjustably by one end to the front face of the segment |26. The arm |36 is provided with a curved slot which embraces the shank of a bolt |32 projecting from the front face of the segment, there being a nut |33 to clamp the arm |36 in its desired position of adjustment. The arm |36 adjacent its upper end is provided with a roll |36, which `during the rotation of the cam shaft 93 is engaged by the cam 92.

With this construction the segment |26 is moved from the position of Fig. 6 to that of Fig. 3 to retract the tape-severing knife from the cutting bed 69. During this movementof the segment |26, power is stored in a spring |35, (Fig. 1l). One end of the spring is hooked over a pin |36, (Fig. 8), projecting rearwardly from the plate l2. The other end of the spring is secured to a collar |31 on the shaft |28, the spring being arranged in a coil on a shoulder formed on the collar |31.

In order to latch the tape-severing knife in its retracted position, (Fig. 3), against the power of the spring |35, the upper end of the arm |36 is curved to ride under a trigger |36 carried by one r end of the lever i8 and lift it slightly against the tension of the spring 32 which causes the trigger |38 to snap into engagement with a ledge |39 formed on the end of the arm |36 at one side of the curved portion thereof.

In order to supplement the action of the locking ratchet |62 to positively prevent the accidental rotation of the ratchet 66 when the parts are in the position of Fig. 3, the arm |30 is provided with a vertically adjustable block |46 having a laterally extending portion arranged to be engaged by the pin |636.

After the tape-severing knife has been thrown out of operation the pawl 95 Vibrates on the smooth portion 98 on the ratchet 9G until the hammer 21| has withdrawn from the supply of slack tape held by the pull-off sufficient tape to tape the work being operated upon. The tapesevering knife and its associated parts are held in the position of Fig. 3 until the tape-applying hammer 21| eats up all the slack tape which in accordance with the initial adjustment for length the tape pull-off lever is capable of delivering. As soon as the tape delivering stroke of the pulloff lever H is limited by the cam H2, the tapeapplying hammer 23 during its taped work feeding movement subjects the run of tape extending from the taped work to the roll 'i6 to tension sufcient to depress the roll 86 and thus withdraw the trigger |38 from the ledge |39 thereby releasing the tape-severing knife to the influence of the power stored in the spring |35, which thereupon imparts the tape-severing stroke to the tape-severing knife. During this stroke the segment moves from the position of Fig. 3 to that of Fig. 6.

In order to rotate the ratchet 96 slightly in the direction of the arrow, (Fig. 3), and thus transfer the point of operation of the pawl 95 from the smooth portion 98 to the first tooth 99 in the ratchet 94 in readiness for the next pull-off cycle the arm |36 is provided with a roll |34 which, in Fig. 7 moves, when the arm is unlatched, through the three positions shown to engage the cam 92 and rotate the ratchet.

In order to bring the leading edge of the tape connected to the source of supply from the position it occupies while shaped by the tape-severing knife down the cutting bed 89, under the lower corner thereof and into the Zone of .activity of the tape-applying hammer 2li, the machine is provided with two tape presenters |44 and |45 which during the normal tape-applying operations act as tape guides in cooperation with the cutting bed 89.

The tape-presenter |46 comprises .a strip |66 having a bent lower end |67 arranged to press the tape against the cutting bed yieldingly so that it may ride upwardly upon vthe tape and so that it may feed the tape down the cutting bed when moved downwardly. The upper end of the strip |66 is wider than the lower end and is mounted to slide upon a plate |66 secured to the plate M. As shown in Fig. 13 the strip |66 slides on the plate |38 beneath cover plates |69 and |50 secured to the plate |68, the plates being separated to form a guideway for the strip |46 by shims |5| inserted between the plates and engaged with the lateral sides of the strip.

The strip |66 is secured to the back of a rack |52 the teeth on which are meshed with the teeth on the segment |26. With this construction the tape-presenter |66 is moved from the position of Fig. 6 to that of Fig. 3 to feed the leading end of the tape down the cutting bed and below the lower end thereof. When the tape-severing knife is operated to sever the tape the tape-presenter is elevated from the position of Fig. 3 to that of Fig. 6.

When the tape-presenter |34 is in the position of Fig. 6 and for the major portion of its downward tape-presenting stroke it grips the tape so as to resist the tendency of the tape-pull-off device to pull the tape upwardly from beneath the tape-presenter. Just prior to the movement of the tape-presenter |44 into the position of Fig. 3 the freshly made leading edge of the tape has been engaged by the tape-applying hammer so that it is no longer necessary for the tape-presenter |44 to grip the tape tightly against the cutting block 89.

To relieve the pressure of the tape-presenter |44 on the tape as the tape-presenter moves into the position of Fig. 3 the cutting block is reduced slightly in thickness in that locality sufficient to permit the tape, during the tape-applying operation, to slip readily beneath the tape presenter which then acts as a tape-guide.

The tape-presenter |45 is rst retracted .away from the cutting bed to allow the presenter |44 to feed the leading end of the tape down the cutting bed and to dangle below the lower corner thereof, and then is returned to the position of Fig. 3 to press the tape into engagement with the inclined surface in the lower corner of the cutting bed.

The tape-presenter |45 comprises a main blade |53 and an auxiliary blade |54 secured together, back to back, by a screw |55. The upper blade |53 is provided with two slots |56 and I5? which embrace the shanks of two screws 58 and |59 projecting downwardly from the bottom of the bracket |23 beneath the guideway |2|. The lower blade |54 is provided with a slot |66 which embraces the shank of the screw |58. The heads on the screws |58 and |59 overlap the blades |54 and |53, respectively, the construction being such as to permit the blades to slide longitudinally in engagement with the Shanks and heads of the bolts |58 and |59.

The leading end of the blade |54 is wide enough to extend across the cutting bed but is provided with a narrower tongue which is shaped to engage the downwardly extending inclined surface on the lower end of the cutting bed. The tape-engaging end of the blade |53 is narrower than the leading end of the blade |54 and is shaped to press the tape into engagement with the inclined surface on the lower end of the cutting bed.

In order to retract the tape-presenter |45 from the cutting bed 89, the slide |2| carries a cross pin |6| upon which a latch |62 is pivoted. The latch |62 is provided with a lug |63, which when the tape-presenter is in the position of Fig. 8 is depressed into a slot |64 formed in the blade |53, by a leaf spring |65 one end of which is secured to the rack |25 and the other end of which engages the latch |62. With this construction when the tape-severing knife is being retracted the lug |63 engages the blade |53 and carries the tape-presenter |45 along with the slide |2I. To trip the lug |63 to enable the tapepresenter |45 to return to engage the tape prior to the tripping of the tape-severing knife, the latch |62 is provided with an inclined surface |66, arranged to engage a cross-pin |61 projecting reawardly from a knife guard plate |68 adjustably secured to the front face of the guideway |23. The tape-presenter |45 is returned into engagement with the tape on the cutting bed 89 by a coiled spring |69 one end of which is secured to a screw |59 and the other end of which is secured to a pin |16 depending from the blade |53. When the tape-severing knife is operated to sever the tape the lug |63 is reinserted into the slot |64 by the leaf spring |65.

Nothing herein explained is to be interpreted as limiting the various features of the present invention in the scope of its application to use in connection with the particular machine or the particular mode of operation or any combination thereof selected for purposes of illustration and explanation. While the particulars of construction herein set forth are well suited to one mechanical form of the invention and to the uses to which it is put, it is not limited as to these uses, nor to these details of construction, nor to the conjoint use of all its features, nor is it to be understood that these particulars are essential since they may be modified within the skill of the artisan without departing from the true scope of the actual invention, characterizing features of which are set forth in the following claims by the intentional use of generic terms and expressions inclusive of various modifications.

What is claimed as new, is:

1. A tape-applying machine having, in combination, tape-applying mechanism, tape-severing mechanism, and means independent of the operative for throwing the tape-severing mechanism automatically out of operation.

2. A tape-applying machine having, in combination, tape-applying mechanism, tape-severing mechanism, and means for throwing the tape-severing mechanism automatically into and out of operation.

3. A tape-applying machine having, in combination, tape-applying mechanism, tape-severing mechanism, means for throwing the tapesevering mechanism automatically out of operation, and mechanism rendered active in throwing the severing mechanism out of operation for automatically throwing the severing mechanism into operation.

4. A tape-applying machine having, in combination, tape-applying mechanism, tape-severing mechanism, means for throwing the tapesevering mechanism automatically out of operation and for retaining it out of operation, and mechanism rendered active in throwing the severing mechanism out of operation for automatically throwing the severing mechanism into operation.

5. A tape-applying machine having, in combination, tape-applying mechanism, tape-severing mechanism, and means for throwing the tape-severing mechanism automatically out of operation, latching means for retaining the tapesevering mechanism out of operation, and mechanism for automatically disengaging the latching means.

6. A tape-applying machine having, in combination, a pull-off device, means for applying a length of tape to the work and for moving the pull-off device in one direction, and means for moving the pull-off device in the opposite direction to cause it to pull tape from the source of supply.

7. A tape-applying machine having, in combination, a pull-off device, means for applying a length of tape to the work and for moving the pull-off device in one direction, means for limiting the movement of the pull-off device under the infiuence of the tape-applying means, and means for moving the pull-off device in the opposite direction to cause it to pull tape from the source of supply.

8. A tape-applying machine having, in combination, a pull-off device, means for applying a length of tape to the work and for moving the pull-off device in one direction, means for moving the pull-off device in the opposite direction to cause it to pull tape from the source of supply, and means for varying the extent of movement of the pull-ofi device in at least one direction.

9. A tape-applying machine having, in combination, a pull-off device, means for applying a length of tape to the work and for moving the pull-off device in one direction, means for moving the pull-off device in the opposite direction to cause it to pull tape from the source of supply, and means for varying the extent of movement of the pull-nii` device in both directions.

10. A tape-applying machine, having in combination, a pull-olf device, means for applying a length of tape to the work and for moving the pull-01T device in one direction, and mechanism including a cam for moving the pull-off device in the opposite direction to cause it to pull tape from the source of supply.

l1. A tape-applying machine having, in combination, a means for applying progressively a predetermined length of tape to the work, a pulloi device, and mechanism for moving the device progressively to cause it to pull from the source of supply a length of tape commensurate with the predetermined length of tape.

l2. A tape-applying machine having, in combination, means for applying progressively a predetermined length of tape to the work, a pull-off device movable progressively in one direction under the influence of the tape-applying means, and mechanism for moving the device progressively-in the opposite direction to cause the device to pull from the source of supply a length of tape commensurate with the predetermined length of tape.

13. A tape-applying machine'having, in combination, means for applying progressively a predetermined length of tape to the work, a pull-olf device constructed and arranged to form a loop in the tape extending from the tape-applying means to the source of supply and movable progressively in one direction under the influence of the tape-applying means to reduce the amount of tape in the loop by the extent of the predetermined length of tape, and mechanism for moving the device progressively in the opposite direction to cause it to pull tape from the source of supply to restore the amount of tape in the loop.

14. A tape-applying machine having, in combination, means for applying progressively a predetermined length of tape to the work, a pull- 01T device comprising a roll arranged to engage the tape in the portion thereof extending from the tape-applying means to the source of supply and a lever upon which the roll is mounted, means for holding the roll engaged with the tape under a light tension sufficient to cause the roll to form a loop in the tape and permit the lever to move progressively in one direction under the influence of the tape-applying means to withdraw from the loop a length of tape commensurate with the predetermined length of tape, and a cam for moving the lever progressively in the opposite direction to cause the roll to pull tape from the source oi' supply to restore the amount of tape in the loop.

15. A tape-applying machine having, in combination, means for applying prcgressively a predetermined length cf tape to the work, a pull-oit device comprising a roll arranged to engage the tape in the portion thereof extending from the tape-applying means to the source of supply and a lever upon which the roll is mounted, means for holding the roll engaged with the tape under a light tension suiiicient to cause the roll to form a loop in the tape and permit the lever to move progressively in one direction under the inuence of the tape-applying means to withdraw from the loop a length of tape commensurate With the predetermined length of tape, a cam for moving the lever progressively in the opposite direction to cause the roll to pull tape from the source of supply to restore the amount of tape in the loop, and an adjustable stop for variably limiting the movement of the lever in one direction.

16. A tape-applying machine having, in combination, means for applying progressively a predetermined length of tape to the work, a pull-off device, and means for operating the device, before the tape is applied tothe Work, progressively in one direction tc pull a length of tape from the source of supply commensurate with the predetermined length of tape.

17. A tape-applying mechanism having, in combination, a tape-applying mechanism operating in repeated cycles to apply a predetermined length of tape to the work and a pull-off mechanism operating in a single cycle before the operation of the tape-applying mechanism to pull a length of tape from the source of supply commensurate with the predetermined length.

18. A tape-applying machine having, in combination, a tape-pulling device having a single stroke in which it pulls tape from the source of supply and forms a source of slack tape supply freed from the source of supply tension, and means for applying a predetermined length of slack tape to the Work.

19. A tape-applying machine having, in. combination, means for pulling tape from the source of supply and holding the pulled-oif tape in a Asource of slack tape supply and means operattape supply for applying a predetermined length of slack tape to the work.

. 20. A tape-applying machine having, in combination, a tape pull-off, a tape-severing knife, mechanism for throwing the knife out of operation, and a common cam for operating the pulloff to pull tape from the source of supply and the mechanism for throwing the knife out of operation.

21. A tape-applying machine having, in combination, a tape pull-off, a tape-severing knife, mechanism for throwing the knife out of operation, a common cam for operating the pull-off to pull tape from the source of supply and the mechanism for throwing the knife out of operation successively.

22. A tape-applying machine having, in combination, a tape pull-off, a tape-severing knife, mechanism for throwing the knife out of operation, a common cam for operating the pull-off to pull tape from the source of supply and the mechanism for throwing the knife cut of operatio-n successively, and mechanism for operating the cam including a mutilated ratchet secured to the cam, a pawl, means for supporting and operating the pawl to cause it to engage the teeth of the ratchet, one at a time, successively, and to thereafter transfer the pawl to the mutilated portion of the ratchet, mea-ns for locking the ratchet from accidental movement in either direction While the pawl is engaged with the mutilated portion of the ratchet, and means for unlocking the ratchet and reengaging the pawl with the teeth on the ratchet to. restart the cycle.

23. A tape-applying machine having, in combination, a tape applier, a tape pull-01T, a tapesevering knife, mechanism for throwing the knife out of operation including latching means, a common cam for operating the pull-off to pull tape from the source of supply and the mechanism for throwing the knife out of operation, mechanism for operating the cam including a vibratory lever, and a common mechanism for vibrating the lever and for operating the tape applier to apply tape to the work and to disengage the latching means.

24. A tape-applying machine having, in combination, a work-support, a. tape-applying device, a tape-guide, and means for imparting to the device compound vertical and lateral movement towards the tape-guide into engagement with the work.

25. A tape-applying machine having, in combination, a tape-applying mechanism, means for conducting the tape to the tape-applying mechanism including a cutting block having a flat cutting bed surface, and a knife having a cutting edge which butts against said surface for severing the tape.

26. A tape-applying machine having, in combination, tape-applying mechanism, means for conducting the tape to the tape-applying mechanism including a cutting block over which the nontacky face of the tape is drawn and a knife having a Y shaped cutting edge acting on the tacky face of the tape and in cooperation with the block for severing the tape, there being an opening leading into the knife between the branches of the Y out of which the waste pieces cut out of the tape may pass in a stack.

27. A tape-applying machine having, in combination, tape-applying mechanism, means for conducting the tape to the tape-applying mechanism including a cutting block, and a knife, having a straight cutting edge and two cutting edges which are curved in opposite directions, respectively, and which branch from the straight cutting edge, cooperating with the block for severing the tape and for simultaneously shaping the trailing edge on the length of tape being applied by the tape-applying mechanism and the leading edge on the length of tape next to be applied to fit runs on eyelet rows bent in opposite directions.

28. A reenforcing machine having, in combination, a support for a piece of sheet material having an eyelet row and a folded margin extending in a straight run along one longitudinal edge of the eyelet row and in at least one bent run around the ends, respectively, of the eyelet row, a single knife for shaping the leading and trailing edges of a stay to fit, respectively, the ends of the eyelet row, and means for applying the stay to the eyelet row with one of the longitudinal edges of the stay and its opposite ends engaged, respectively, with the straight and bent runs.

29. A reenforcing machine having, in combination, a support for a piece of sheet material having an eyelet row and a folded margin extending in a straight run along one longitudinal edge of the eyelet row and in runs bent in opposite directions, around the ends, respectively, of the eyelet row, and a single knife for shaping the leading and trailing edges of a stay to iit, respectively, the ends of the eyelet row, and means for applying the stay to the eyelet row with one end of the longitudinal edges of the stay and its opposite ends engaged respectively, with the straight and bent runs.

30. A reenforcing machine having, in combination, a support for a piece of sheet material having an eyelet row and a folded margin extending in a straight run along one longitudinal edge of the eyelet row and in a bent run around at least one end of the eyelet row, a single knife for producing a stay having end edges and having one longitudinal edge shorter than the other, and means for applying the stay to the eyelet row with the shorter longitudinal edge of the stay and one end edge thereof adjacent, respectively, the straight run and a bent run.

31. A tape-applying machine having, in combination, tape-applying mechanism, means for conducting the tape to the tape-applying mechanism including a cutting block over which the non-tacky face of the tape is drawn, a tape-guide for guiding the tape as it is drawn over the cutting block, a tape-severing device in the path of operation of which the tape-guide normally lies, interposable between the tape-guide and the work, and mechanism automatically thrown into operation upon the drawing of a predetermined length of tape through the tape-guide for withdrawing it from the path of operation of the tape-severing device and for actuating the device to sever the tape.

32. A tape-applying machine having, in combination, tape-applying mechanism, means for conducting the tape to the tape-applying mechanism including a cutting block over which the nontacky face of the tape is drawn, a combined 4tapepresenter and tape-guide acting upon the tape as it is drawn over the cutting block, a tapesevering device, in the path of operation of which the combined tape-presenter and tape-guide normally lies, mechanism for withdrawing the combined tape-presenter and tape-guide from the path of operation of the tape-severing device and for actuating the device to sever the tape, and mechanism for throwing the tape-severing device out of operation and for returning the combined tape-presenter and tape-guide into the path of operation of the device and feeding the leading edge of the tape over the cutting block towards the Work.

33. A tape-applying machine having, in combination, tape-applying mechanism, means for con ducting the tape to the tape-applying mechanism including a block over which the nontacky face of the tape is drawn, two tape guides for guiding the tape as it is drawn over the block, and means for relatively operating the guides in two directions normal to each other.

34. A tape-applying machine having, in combination, a work support, a tape-applying device, a tape guide, and means for imparting to the device a compound vertical and lateral movement towards the tape guide into engagement with the work comprising an eccentric, a fixed pivot, a block pivoted thereon and a head for the device having a strap connection with the eccentric and a slot, in which the block is mounted, said block and slot constraining the hammer to move into and out of engagement with the work in directions non-radial to the eccentric.

35. A tape-applying machine having, in combination, a roll work support, a tape-applying device and means for imparting four motions to the device including a compound vertical and lateral movement towards the up-going side of the roll into engagement with the work.

WALTER P. OSGOOD. 

